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• <br />The vegetative types dicussed will provide a very diverse habitat <br />when canopy cover is not excessive and overgrazing has not occurred. <br />Steep slopes and southern exposures also limit plant diversity and <br />production. Diversity on the shrub sites on the Hawksnest unit is <br />limited mainly by the excessive oak brush canopy and competition, <br />while the understory on the Pinyon-Juniper is limited by droughth,y <br />soil conditions. <br />Reestablishing vegetation on the Pinyon-Juniper woodland would be <br />difficult at best, if not impossible on many areas. Disturbance of <br />these areas should be held to a minimum and restricted to favorable <br />north or east slopes of 20 percent slope or less. <br />Revegetating shrubland communities is much more favorable and successful <br />because of deeper soils. Wheatgrasses and desirable shrubs can <br />successfully be replanted if topsoil and subsoil depth is maintained <br />to provide a minimum root growth medium. Attention to slope and <br />aspect must be maintained here also, as on the Pinyon-Juniper wood- <br />land sites. <br />r1 <br />~J <br />• <br />